2021 Buick Encore GX transmission control module — Differential Lock, (rear differential) price snapshot
- Low
- $40
- Average
- $119
- High
- $204
Year & trim-specific price guide
Used 2021 Buick Encore GX Transmission Control Module — Differential Lock, (rear differential) prices
Trim-specific pricing for the Differential Lock, (rear differential) variant of the 2021 Buick Encore GX transmission control module, built from 30 real salvage yard listings with condition grade detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedSep 28, 2026AS
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Price summary
A used 2021 Buick Encore GX transmission control module (Differential Lock, (rear differential)) costs $40 to $204, with a median asking price of $132. Based on 30 priced salvage yard listings across the US, updated Sep 28, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$132
Grade B (good)$148
USD
Condition comparison
Price by part grade
Grade AClean / low wear$40–$20423 listings
Grade BStandard used$65–$1665 listings
Grade XUngraded$65–$652 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $40–$204 | 23 | |
| Grade BStandard used | $65–$166 | 5 | |
| Grade XUngraded | $65–$65 | 2 |
Median by grade
Grade price comparison
Grade A$132
Grade B$148
Ungraded$65
Median asking price by seller-reported condition grade · $40–$204 overall range
Trim-specific context
How does the Differential Lock, (rear differential) compare?
This pricing covers the Differential Lock, (rear differential) variant of the 2021 Buick Encore GX transmission control module, based on 30 priced listings. Its $132 median is 32% above the 2021 Buick Encore GX transmission control module overall median of $100.
There are 19 other transmission control module variants available for the 2021 Buick Encore GX.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
Differential Lock, (rear differential) in other model years
Same year, other trims
What other 2021 Buick Encore GX transmission control module variants are available?
Communication, telematics (OnStar, opt UE1), ID 84676081
49 listings$146$40 – $232Driver Assist, park assist, (inner RH quarter panel), park assist (opt UD7)
46 listings$71$41 – $203Air Bag, air bag (below console)
44 listings$101$25 – $232Network Gateway, (LH floor)
44 listings$176$45 – $232Body Control (BCM), (below center console)
43 listings$75$45 – $176Communication, telematics (OnStar, opt UE1), ID 84979014
43 listings$126$40 – $232Theft-Locking, theft deterrent (floor console)
43 listings$46$30 – $182Theft-Locking, keyless entry (engine compartment), ID 13518843
42 listings$81$50 – $176Air Bag, occupant detection (below passenger seat)
41 listings$171$35 – $405Memory, (under driver seat)
40 listings$176$41 – $232Transmission, CVT
40 listings$51$45 – $322Driver Assist, park assist, (inner RH quarter panel), automatic park control (opt UKG)
38 listings$61$50 – $405Theft-Locking, lock (LH outside mirror)
38 listings$75$25 – $305Transmission, 9 speed (AT)
37 listings$75$56 – $182Communication, wireless charger, (under console)
31 listings$66$50 – $305Theft-Locking, keyless entry (engine compartment), ID 13518840
31 listings$90$50 – $310ABS, (ABS valve mounted)
30 listings$166$65 – $345Driver Assist, surround view (opt UV2), (LH inner quarter panel), ID 84863042
27 listings$124$50 – $340Driver Assist, surround view (opt UV2), (LH inner quarter panel), ID 86778385
18 listings$105$90 – $268Back to full guide
2021 Buick Encore GX transmission control module — all trims
Common questions
2021 Buick Encore GX transmission control module (Differential Lock, (rear differential)) FAQ
How much is a used 2021 Buick Encore GX transmission control module (Differential Lock, (rear differential))?
Based on 30 priced salvage-yard listings, a used 2021 Buick Encore GX transmission control module in the Differential Lock, (rear differential) variant lists between $40 and $204, with a median asking price of $132.
Which years use the Differential Lock, (rear differential) transmission control module?
The Differential Lock, (rear differential) variant appears in model years 2020, 2021, 2022, 2023, 2024, 2025. Prices and availability may differ by year.